Statistic sensitivity optimization of non-drift all-pole active low-pass filters

Non-drift all-pole active low-pass filters are widely used for their non-drift characteristics.Based on the definition of statistic sensitivity and theory deduction,an optimum method is put forth for statistic sensitivity of the non-drift all-pole active low-pass filters.Their feasibility is proved by the low rank system model.It can be deduced that the system sensitivity is the lowest when all the βi are equal to one.The decentralization rate of resistance and capacitance is lowered very much,and the number of the needed elements is reduced to the half of the formal ones,so as to realize the objects of system simplification.